Grease ejecting system



A. BIZZARRI 1,936,104

GREASE EJECTING SYSTEM Nov. 21, 1933.

Original Filed Aug. 13, 1931 4 Sheets-Sheet l IN VEN TOR.

Nov. 21, -192.3. A .2mm. 1,936,104

GREASE EJECTING SYSTEM Original Fil ed Aug. 13, 1931 4 Sheets-Sheet 2 IN VEN TOR.

' @KLL 6; 1 14.-

Nov. 21, 1933. A. BIZZARRI 1,936,104

GREASE EJECTING SYSTEM Original Filed Aug. 15, 1931 4 Sheets-Sheet 5 IN VEN TOR.

W m m Nov. 21, 1933. A BQZARR. 1,936,104

GREASE EJECTING SYSTEM Original Filed Aug. 13, 1931 v 4 Sheets-Sheet 4 IN V EN TOR.

Patented Nov. 21, 1933 GREASE EJECTING SYSTEM I Anthony Bizzarri, New York, N. Y.

Application August 13, 1931, Serial No. 556,756 Renewed April 14, 1933 18 Claims. (o1. 221-471 My present invention relates to grease dispensing devices, and more particularly, to such devices as may beactuated by hydraulic. pressure. I have found that when handling heavy greases such as those used for the lubrication of difierential mechanisms of motor vehicles, it is necessary to employ considerable pressure to expel the heavy grease from its container and inject the same into the d fferential casing. .I'Io-wever, by means of the present invention, I provide hydraulically actuated means whereby the ejection of the heavy grease is readily accomplished. In the accompanying specification I shall describe, and in the annexed drawings show two illustrative embodiments of the hydraulically actuated grease dispensing devices of the present invention. It is, however, to be clearly understood that I do not wish to be limited to. the exact details of the aforesaid illustrative embodiments herein shown and described for purposes of illustration only.

It is the main object of my present invention to provide devices of the general character specified which are simple in construction, easy and economical to fabricate and assemble, and which are admirably adapted to perform their intended functions, to eliminate the clifficulties experienced with existing devices for like purposes. Other objects and advantages of the present invention will in part be pointed out in detail hereinafter, and will in part be obvious to those skilled in the art to which the present invention relates.

In the accompanying drawings, Fig. 1 is a diagrammatic view illustrating one of the aforesaid illustrative embodiments of thepresent in- 35 vention in an inoperative position.

Fig. 2 is a similar view of the same in'a partially operative position. i

Fig. 3 is a like View of the same in a completely operative position.

Fig. 4 is a diagrammatic view of another of the aforesaid illustrative embodiments of the present invention in an inoperative position.

Fig. 5 is asimilar view of the same in a partially operative position; and

Fig. 6 is a like view of the same in a completely operative position.

7 Referring now more in detail to the first of the aforesaid illustrative embodiments of the present invention, and with particular reference to Figs. 1, 2 and 3 of the drawings illustrating the same, the numeral 10 generally designates a reservoir for a hydraulic fluid 11. J ournalle'd in one of the walls of the reservoir and extending therein is the 55 shaft 12 of anelectric motor, (not shown), said shaft carrying at the end thereof an eccentric cam 13.

Formed in the reservoir 10 are a plurality, here shown as 4, cylinders 14, 15, 16 and 17, the first two of which constitute part of hydraulic fluid pumps and the second two of which constitute part of heavy grease pumps. The cylinders 14 and 15 are respectively provided with inlets 14 and' 15 communicating with the reservoir 10 and operable within these cylinders are plungers 14" and 15", at all times in contact with the eccentric cam 13. The cylinders are further provided with outlets 18 and 19 in which operate check valves 20 and 21, the outlets communicating by way of a pipe 22 with the lower end of a grease container 23, beneath a piston 24 normally retained in the lower end of the container by means of the tension spring 25. The pipe 22 is provided with a by-pass needle valve 26, the purpose of which will later be described more in detail.

The pipe 22 is provided with anadj ustable check valve 27 and connects with a pipe 28, the upper end of which communicates with a cylinder 29 which, in turn, is connected by a pipe 30 with another cylinder 31. The. latter cylinder communicates by a pipe 32 with the cylinders 16 and 17 of the greasejpumps so as to lubricate said pumps; from whichpumps the lubricating oil returns to the reservoir by way of the outlets l6 and 17. The pipe 28 is provided with an adjustable check valve 33 and a by-pass pipe 34 leading back tothe reservoir 10. v

OperabIe in the cylindersh16 and 17 are plungers 35 and 36. The cylinders are provided with outlets 37 and 38, the outlets communicating with returnpipes 39 and 40, the purpose of which will later be described. At the points of com munication between the outlets 37 and 38 and the return pipes '39 and 40, I provide valves 41 and 42, which are carried by pistons 43 and 44, operable in cylinders 45 and 46. The cylinder 45 communicates by way of a pipe 4'7 with the hydraulic fluid pipe 28 and the cylinder 46 com-- municates byway of a'pipe 48 with the connection 30 between the cylinders 29 and .31.

The outlets 3'7 and 38 of the grease pumps also communicate by pipes 49 and 50 with a conduit 51 which may, in turn, communicate with a flexible hose (not shown) or anyother means for conveying theheavy grease to the place where it is to be used for lubrication. The pipe 50 is provided with a check valve 52. V

Operable in the cylinders 29 and 31 are oylindrical valves 53 and 54, the samebeing respeetively controlled by solenoids-55 and 56.

conduit 51.

This completes the description of the first oi the aforesaid illustrative embodiments of the hydraulic grease dispensing devices of the present invention and while the operation thereof is believed to be cle rly apparent from the foregoing description, the same may be briefly summarized as follows:

With all of the parts in the positions shown in Fig. l of the drawings, the hydraulic fluid ll enters the hydraulic pumps by way of the inlets 14' and 15'. The plungers l4" and 15 force the same out of said cylinders and past the check valves 20 and 21 into the pipe 22. Inasmuch as the spring controlling the check valve 2'7'is weaker than the spring 25 in the grease container 23, the fluid passes the check valve 27 and enters the pipe 28. From here, the fluid passes the valve 53, enters the connection 39, passes the valve 54 and then enters the return pipe. 32. From this pipe, the fluid enters the cylinders 16 and 1'7 of the grease pumps to lubricate the plungers thereof from whence said fluid returns to said reservoirlll by way of the outlets 16 and 1'7. Of course, the eccentric cam 13 is always being rotated. At the same time the grease plungers 35 and 36 are operatin in their cylinders but no grease is being pumped out of the conduit 51 for the reason that any grease passing out ofthe outlet 5'7 of the grease container 23 and into the cylinders 16 and 17, passes through the outlets 37 and 38, but returns to the cylinders by way of the pipes 39 and 40, past the open valves 41'and' 42.

However, if the valve 53 is closed, as shown in Fig. 2 of the drawings, the hydraulic fluid in the pipe 28 will meet a head upon reaching the closed valve and will, therefore, be backed through the pipe 4'7 into the cylinder 45, Where it will act upon the piston 43 to close the valve 41. Now the grease that passes through the outlet 3'7 of the pump cylinder 16 will be forced through the pipe 49 into the conduit 51 and out of the system to wherever it is to be used. Upon releasing the valve 53, the head will be relieved and the piston 43 will return to its normal position, thus opening the valve 41 and again caus- 'ing the grease passing out of the cylinder 16 by 4'7 and cylinder 45 and into the pipe 48and cylinder 46. Both pistons 43 and 44 will, therefore, be acted upon to close the valves 41 and 42. This will cause the grease passing out of-the cylinders 16 and 17 by way of theoutlets 3'7 and 38 to enter the pipes 49 and 50 from where said grease will pass out of the system by way of the Again, releasing the valve 54 will cause the system to resume its normal; inoperative position shown in Fig. l.

Inorder to force the grease out of. the container 23 by way of the outlet 5'7, whenever the hydraulic fluid in the pipe 28 meets a head, in

addition to its entering either the cylinder 45 or 46,.01' both, it is backed into'the lower end of the grease container 23, beneath the piston 24, and urges the piston 24 upwardly against the action of the spring 25, thus forcing the grease above the piston out of thecontainer.

As soon as the container 23 has been emptied of its grease content, the valve 26 is opened and the hydraulic fluid in the container 23, beneath the piston 24, will return to the reservoir 10, past the valve 26.

This completes the description of the mode of operation of the aforesaid illustrative ment of the present invention.

Referring now more in detail to the second of the aforesaid illustrative embodiments of the present invention, and with particular reference to Figs. 4, 5 and 6 of the drawings illustrating the same, the numeral '79 designates a container for grease, said container housing a piston similar in all respects to the piston 24, but not deemed necessary to be here shown, said piston being adapted to be acted upon by a hydraulic fluid in exactly the same manner as disclosed in the first of the aiores id illustrative embodiments of this invention.

The container '79 is provided with outlets '71 and '72 respectively communicating with grease cylinders '73 and '74. Operable within the cyl inders '73 and 74 are plungers '75 and '76, the

plungers being maintained in contact at all times with an eccentric 7'7, driven by a motor not here shown, by expansion springs '75 and '76. The cylinders 73 and '74 are further provided with outlels '78 and 79 containing check valves 80 and 81, the outlets commiuiicating respectively with a pipe 82 connected at its other end with a chamber 83 and a pipe 34 connected at its other end with the same chamber; The chamber 83 contains a check valve 85 normally closed by an expansion spring 36. The chamber 85 communicates by way of ports 87 and 88 with a cylinder 39 and the pipe 32 communicates by way of a port 90 with the same cylinder. The cylinder 89 communicates by way of ports 91 and 92 with a return pipe 93 communicating at its other end with the reservoir '70 and the cylinder also communicates by way of a port 94 with an outlet for the entire system. Operable within the cylinder 89 is a triple valve 96 having valve portions 97, 9S and 99, the valve being normally maintained in the position shown in Fig. 4 of'the drawings by means of an expansion spring 100.

This completes the description of the aforesaid illustrative embodiment of the present in- 'vention and the mode of operation thereof may be briefly summarized as follows:

When it is not desired to use the lubricating system 64 in the aforesaid illustrative embodiment of this invention, the parts are as shown in Fig. 4 of the drawings. As there shown, the grease from the tank '70 is pumped by the plungers '75 and '76 through the pipes 82 and 84. The grease in the pipe 82 entersthe cylinder 89by way of the port 90 and leaves said cylinder by way of the port 91 to the return pipe 93, from where it returns to the container '70. The grease in the pipe 84 enters the chamber 83 and leaves said chamber by way of the port 8'7 into the cylinder 89.

93 from where it again enters the reservoir '79. If it is desired to use the amount of lubricant supplied by one of the pumps 75, for example, the valve 96 is operated so that the valve porembcdi- From the cylinder 89 the grease passes through the port 92 to the return pipe tion 98 closes the communication between the ports 87 and 92 and opens the communication between the ports 88 and 94. With the parts in these positions, the grease from the pump '75 will, as before, be returned to the container '70. But, the grease from the'pump '76, after entering the chamber 83; will not be able'to pass out'of said chamber by way of the port 87 because ofthe closed valve portion 98. Instead, it-willpass through the port 88, past the open valve portion'99, and out of the system pipe 82 will not be returned to the pipe 93 through 'the ports 99=and 91 because of the closed valve portion 9'7, but, instead, will pass the check valve and enterthe chamber 83 from Where it will pass out of the same by way of the port 88,'past the valve portion 99 and out of the system by way of the port 94. and outlet 95. The grease in the pipe S l'will enter the chamber 83 and pass out of the same by way of the port 88, past the valvepo'rtion 99 and out of the system by wayof the -port94 and outlet 95.

This completes the'desc'ript'on of the mode of operation of the second of theaforesaid illustrative embodiments of the present invention.

From all of the foregoing, it will be noted that the systems disclosed are-simple in constructoh, easy and economical tofabricate and assemble and admirably adapted to'perform their intended functions. Other 'superioritie's and advantages of the present invention will be readily-apparentto those skilled in the art to which the present invention relates. V

What I claim as my invention is as follows:

1. In a lubricating system, a container for heavy grease having a grease outlet and a hydraulic fluid inlet, a reservoir for hydraulic fluid communicating with said inlet, means to force the hydraulic fluid from said reservoir'to said container to eject the grease therefrom, means to force the ejected grease to the place where it is to be used, and means communicating with said first and second named means to lubricate the latter.

2. In a lubricating system, a container for heavy grease having a grease outlet and a hydraulic fluid inlet, a reservoir for hydraulic fluid communicating with said inlet, means to force the hydraulic fluid from said reservoir to said container to eject the grease therefrom, means to force the ejected grease to the place where it is to be used, and means associated with said first named means to cause said second named means to operate.

3. In a lubricating system, a container for heavy grease having a grease outlet and a hydraulic fluid inlet, a reservoir for hydraulic fluid communicating with said inlet, means to force the hydraulic fluid from said reservoir to-said container to eject the grease therefrom, means place where it is to be use,-and means associcontainer to eject the grease therefrom, and a from; and means to-force the ejected grease to the place where it is to be used. a I

5. In a lubricating system, a container for heavy grease having a grease outlet and a hydraulic fluid inlet, a reservoir for hydraulic fluid 80 communicating 'with said inlet, a plurality of pumps to force the hydraulic fluid from said reservoir to said container to eject the grease therefrom, means to force the ejected grease to the place where it is to be used, and means communicating with said pumps and first named means to lubricate the latter. 6.111 a lubricating system, a container for heavy greasehaving a grease outlet and a hydraulic fluid inlet,'a reservoir for hydraulic fluid communicating with said inlet, a plurality of pumps to force the hydraulic fluid from said reservoir to saidcontainer to eject the grease'therefrom, means to force the ejected grease to the 95 ated with said pumps to-cause means to operate. I

' 7. In' a lubricating system, a container for heavy grease having a grease outlet and a hydraulic fluid inlet, a reservoir for hydraulicfluid communicating with said inlet, a plurality of pumps to force the hydraulic fluid from said reservoir to said container to eject the grease theresaid first named from, means to force the ejected grease to the place where it is to beused, means communicating with said pumps and first named means to lubricate the' latter, and means associated with said pumps to cause said first named means to plurality of pumps to force the ejected grease to the place where it is to be used.

9. In a lubricating system, a container for heavy grease having a grease outlet and a hydraulic fluid inlet, a reservoir for hydraulic fluid communicating with saidinlet, means to force the hydraulic fluid from said reservoir to said container to eject the grease therefrom, a plurality of pumps to force the ejected grease to the place where it is to be used, and means communicating with said first named means and said pumps to lubricate the latter.

10. In a lubricating system, a container for heavy grease having a grease outlet and a hydraulic fluid inlet, a reservoir for hydraulic fluid communicating with said inlet, means to force the. hydraulic fluid from said reservoir to said container to eject the grease therefrom, a plurality of pumps to force the ejected grease to the place where it is to be used, and means associated with 35 said first named means to cause said pumps to operate.

11. In a lubricating system, a container for heavy grease having a grease outlet and a hydraulic fluid inlet, a reservoir for hydraulic fluid communicating with said inlet, means to force the hydraulic fluid from said reservoir to said container to eject the grease therefrom, a plurality of pumps to force the ejected grease to the place where it is to be used, means communicating with said first named means and pumps to lubricate the latter, and means associated with said first named means to cause said pumps to operate.

12. In a lubricating system, a container for heavy grease having a grease outlet and a hy- 150 drauli fl id nle a eserv ir forhydrauli Vflu d communicating withg said inlet, a plurality of pumps to force the hydraulic fluid from said reservoir to said container to eject the grease therefrom, and a plurality of additional pumps to force th ejected rease to the plac Where it i to be used. e I

13'. In :alubricating system, a container for heavy rea having a ease'ou t and a hydraulic fluid inlet, a reservoir for hydraulic fluid communicatin with said in t, a p u ality o pumps to force the hydraulic fiuidfromv said reservoir to said container to eject the grease herefro a p urality of add tional pumps t for e 'the eiected grease to he place where it is t be used, and means communicating with said first and second named pumps to lubricate h a er- 14; In a lubricating system, a container for heavy rea e having a rease outlet and a hydraulic fluid inlet, a reservoir for hydraulic fluid communicatin with said inlet, a plurality of pumps to force the hydraulic fluid from said reservoir tosaid container to eject the grease therefrom, a plurality of additional pumps to force the ejected'grease to theplace where it is to be used, and means associated with said first namedpumps to cause said second named pumps to operate; '15-.In a lubricating system, a container for heavy rease having'a grease outlet and a hydraulic fluid inlet,ia.'re'servoir for hydraulic fluid communicating with saidv inlet, a plurality of pumps to ,force theihydraulic fluid from said reservoir to said container to eject the grease therefrom, a plurality of additional pumps to force the ejected grease to the place where itisto be memos communicating with said inlet, means to force the hydraulic fluid from said reservoir to said container to eject the grease therefrom, means to force the ejected grease to the place where it is to be used, and a plurality of solenoid-controlled valves associated with said first named means to cause said second named means to operate.

17. In a lubricating system, a container for heavy grease having a grease outlet and a hydraulic fluid inlet, a reservoir for hydraulic fluid communicating with said inlet, a plurality of pumps to force the hydraulic fluid from said reservoir to said container to eject the grease therefrom, means to force the ejected grease to the place Where it is to be used, and a plurality of solenoid-controlled valves associated with said pumps to cause said first named means to operate.

18. In a lubricating system, a container for heavy grease having a grease outlet and a hy draulic fluid inlet, a reservoir for hydraulic fluid communicating with said inlet, a plurality of pumps to force the hydraulic fluid from said reservoir to said container to eject the grease therefrom, a plurality of additional pumps to force the ejected grease to the place where it is to pe used, and a plurality of solenoid-controlled valves associated with said first named pumps to cause said second named pumps to operate.

- ANTHONY BIZZARRI. 

